Some decoders ask for interlaced content, but will play progressive content just fine. This setting will add "interlaced" headers to the metadata of progressive content, to make it look like it is actually interlaced.

Maximum average light level for content frames nits or candelas per square meter (cd/m2) - integer values. Although values up to 10000 are allowed, values in the 100-200 range will generally produce the best results.